Agilent Technologies N4962A Guía de usuario descargar pdf (Pagina 9)

N4982A CRU

LF TrigO

HF TrigO

JitterI

EXT CKI

TX CKO

~IN

~OUT

OUT

DUT with PMD

RX CKI

RX CKO

TX CKI

N4962A serial BERT

12.5 Gb/s

CLK output

~CLK output

Data input

E/O

O/E

Figure 10. Block diagram – Differential BER measurement with Agilent CRU

The N4982A clock recovery unit will automatically scan between 622 Mb/s and

13.5 Gb/s, and will lock onto the highest-power frequency rate it can find. The

recovered clock is ideally suited to drive the BERT error detector.

Consult the CRU User Guide for detailed procedures regarding the use of the

clock recovery unit.

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Agilent Technologies N4962A Guía de usuario Pagina 9